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Finding the Fourth Proportional to 199.48, 298.67 and 144.69

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Solution

The fourth proportional to 199.48, 298.67 and 144.69 is: 216.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.48 : 298.67 = 144.69 : x
  2. Step 2: Convert to fraction form
    199.48/298.67 = 144.69/x
  3. Step 3: Cross multiply
    199.48x = 298.67 × 144.69
  4. Step 4: Simplify right side
    199.48x = 43,214.56
  5. Step 5: Solve for x
    x = 43,214.56/199.48
  6. Step 6: Final answer
    x = 216.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.